ActivityPub Viewer

A small tool to view real-world ActivityPub objects as JSON! Enter a URL or username from Mastodon or a similar service below, and we'll send a request with the right Accept header to the server to view the underlying object.

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{ "@context": [ "https://w3id.org/security/v1", "https://www.w3.org/ns/activitystreams", { "Hashtag": "as:Hashtag", "sensitive": "as:sensitive", "schema": "http://schema.org/", "pixelfed": "http://pixelfed.org/ns#", "commentsEnabled": { "@id": "pixelfed:commentsEnabled", "@type": "schema:Boolean" }, "capabilities": { "@id": "pixelfed:capabilities", "@container": "@set" }, "announce": { "@id": "pixelfed:canAnnounce", "@type": "@id" }, "like": { "@id": "pixelfed:canLike", "@type": "@id" }, "reply": { "@id": "pixelfed:canReply", "@type": "@id" }, "toot": "http://joinmastodon.org/ns#", "Emoji": "toot:Emoji", "blurhash": "toot:blurhash" } ], "id": "https://pixelfed.social/p/adfr/824741438699064673", "type": "Note", "summary": null, "content": "The Whirlpool Galaxy<br />\n================<br />\n<br />\nThis is Messier 51, the so called Whirlpool Galaxy - an interacting grand-design spiral galaxy with a Seyfert 2 active nucleas, located about 31 million light years from us in the constellation Canes Venatici.<br />\n<br />\nDiscovered in October 1773 by Charles Messier, M51 (and its partner NGC 5195) is one of the most-observed and studied interacting galaxies. With an apparent magnitude of 8.4mag it’s relatively bright and easily visible with also smaller amateur telescopes.<br />\n<br />\nScope: Askar 103APO<br />\nLens: Askar 1.0x Flattener<br />\nCamera: Canon EOS 6Da<br />\nFilter: Svbony IV/IR-Cut<br />\nMount: Skywatcher AZ-EQ5 GT<br />\nGuiding: Svbony SV165 Guide Scope with ZWO ASI 224MC<br />\nController: ZWO ASIAir Pro<br />\n<br />\nIntegration time: 5hrs 50min<br />\n<br />\nFull version and print available at: <a href=\"https://adfr.io/astro/20250427_m51\" rel=\"external nofollow noopener\" target=\"_blank\">https://adfr.io/astro/20250427_m51</a><br />\n<br />\n<a href=\"https://pixelfed.social/discover/tags/astrophotography?src=hash\" title=\"#astrophotography\" class=\"u-url hashtag\" rel=\"external nofollow noopener\">#astrophotography</a> <a href=\"https://pixelfed.social/discover/tags/astrophoto?src=hash\" title=\"#astrophoto\" class=\"u-url hashtag\" rel=\"external nofollow noopener\">#astrophoto</a> <a href=\"https://pixelfed.social/discover/tags/astrophotographer?src=hash\" title=\"#astrophotographer\" class=\"u-url hashtag\" rel=\"external nofollow noopener\">#astrophotographer</a> <a href=\"https://pixelfed.social/discover/tags/deepsky?src=hash\" title=\"#deepsky\" class=\"u-url hashtag\" rel=\"external nofollow noopener\">#deepsky</a> <a href=\"https://pixelfed.social/discover/tags/deepskyphotography?src=hash\" title=\"#deepskyphotography\" class=\"u-url hashtag\" rel=\"external nofollow noopener\">#deepskyphotography</a> <a href=\"https://pixelfed.social/discover/tags/deepskyobject?src=hash\" title=\"#deepskyobject\" class=\"u-url hashtag\" rel=\"external nofollow noopener\">#deepskyobject</a> <a href=\"https://pixelfed.social/discover/tags/deepskyastrophotography?src=hash\" title=\"#deepskyastrophotography\" class=\"u-url hashtag\" rel=\"external nofollow noopener\">#deepskyastrophotography</a> <a href=\"https://pixelfed.social/discover/tags/whirlpoolgalaxy?src=hash\" title=\"#whirlpoolgalaxy\" class=\"u-url hashtag\" rel=\"external nofollow noopener\">#whirlpoolgalaxy</a>", "inReplyTo": null, "published": "2025-05-04T20:28:01+00:00", "url": "https://pixelfed.social/p/adfr/824741438699064673", "attributedTo": "https://pixelfed.social/users/adfr", "to": [ "https://www.w3.org/ns/activitystreams#Public" ], "cc": [ "https://pixelfed.social/users/adfr/followers" ], "sensitive": false, "attachment": [ { "type": "Image", "mediaType": "image/jpeg", "url": "https://pxscdn.com/public/m/_v2/574240391871539765/208209554-471e9e/JJooUwojBGRj/9zS699wAoT3IMh2IojW6C7OSfCuwRH2f5znrVfmk.jpg", "name": null, "blurhash": "U47w+-t600M|ofj[WBof00Rk~qxtWAofogM{", "width": 1437, "height": 1080 }, { "type": "Image", "mediaType": "image/jpeg", "url": "https://pxscdn.com/public/m/_v2/574240391871539765/208209554-471e9e/6af5tKMLBvmW/kLzjTEq5xplvYMgoKhXk7t6oNTsVLGrfLen8FJ0L.jpg", "name": null, "blurhash": "U05}mqofD%jwV@WAogjYD%oM%MocR%bFWVj]", "width": 1438, "height": 1080 } ], "tag": [ { "type": "Hashtag", "href": "https://pixelfed.social/discover/tags/astrophotography", "name": "#astrophotography" }, { "type": "Hashtag", "href": "https://pixelfed.social/discover/tags/deepsky", "name": "#deepsky" }, { "type": "Hashtag", "href": "https://pixelfed.social/discover/tags/astrophoto", "name": "#astrophoto" }, { "type": "Hashtag", "href": "https://pixelfed.social/discover/tags/deepskyobject", "name": "#deepskyobject" }, { "type": "Hashtag", "href": "https://pixelfed.social/discover/tags/deepskyastrophotography", "name": "#deepskyastrophotography" }, { "type": "Hashtag", "href": "https://pixelfed.social/discover/tags/whirlpoolgalaxy", "name": "#WhirlpoolGalaxy" }, { "type": "Hashtag", "href": "https://pixelfed.social/discover/tags/astrophotographer", "name": "#astrophotographer" }, { "type": "Hashtag", "href": "https://pixelfed.social/discover/tags/deepskyphotography", "name": "#deepskyphotography" } ], "commentsEnabled": true, "capabilities": { "announce": "https://www.w3.org/ns/activitystreams#Public", "like": "https://www.w3.org/ns/activitystreams#Public", "reply": "https://www.w3.org/ns/activitystreams#Public" }, "location": null }